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What is the Least Common Multiple of 15646 and 15656?

Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor.

Least common multiple (LCM) of 15646 and 15656 is 122476888.

LCM(15646,15656) = 122476888

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Least Common Multiple of 15646 and 15656 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15646 and 15656, than apply into the LCM equation.

GCF(15646,15656) = 2
LCM(15646,15656) = ( 15646 × 15656) / 2
LCM(15646,15656) = 244953776 / 2
LCM(15646,15656) = 122476888

Least Common Multiple (LCM) of 15646 and 15656 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15646 and 15656. First we will calculate the prime factors of 15646 and 15656.

Prime Factorization of 15646

Prime factors of 15646 are 2, 7823. Prime factorization of 15646 in exponential form is:

15646 = 21 × 78231

Prime Factorization of 15656

Prime factors of 15656 are 2, 19, 103. Prime factorization of 15656 in exponential form is:

15656 = 23 × 191 × 1031

Now multiplying the highest exponent prime factors to calculate the LCM of 15646 and 15656.

LCM(15646,15656) = 23 × 78231 × 191 × 1031
LCM(15646,15656) = 122476888